Home / 28,287,792,017.20-42,431,688,025.80-11,720,059,793.20

Finding the Fourth Proportional to 28,287,792,017.20, 42,431,688,025.80 and 11,720,059,793.20

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Solution

The fourth proportional to 28,287,792,017.20, 42,431,688,025.80 and 11,720,059,793.20 is: 17,580,089,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287,792,017.20 : 42,431,688,025.80 = 11,720,059,793.20 : x
  2. Step 2: Convert to fraction form
    28,287,792,017.20/42,431,688,025.80 = 11,720,059,793.20/x
  3. Step 3: Cross multiply
    28,287,792,017.20x = 42,431,688,025.80 × 11,720,059,793.20
  4. Step 4: Simplify right side
    28,287,792,017.20x = 497,301,920,788,784,545,792
  5. Step 5: Solve for x
    x = 497,301,920,788,784,545,792/28,287,792,017.20
  6. Step 6: Final answer
    x = 17,580,089,689.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.